Ptosis is also called "drooping eyelid." It is caused by weakness of the muscle responsible for raising the eyelid, damage to the nerves that control those muscles, or looseness of the skin of the upper eyelids.
Causes, incidence, and risk factors
Drooping eyelid can be caused by the normal aging process, a congenital abnormality (present before birth), or the result of an injury or disease.
Special tests may be done to evaluate suspected causes, such as myasthenia gravis
If an underlying disease is found, the treatment will be specific to that disease. Most cases of ptosis are associated with aging and there is no disease involved.
Surgery can be done to improve the appearance of the eyelids in milder cases if the patient wants it. In more severe cases, surgery may be necessary to correct interference with vision. In children with ptosis, surgery may be necessary to prevent amblyopia.
The expected outcome depends on the cause of the ptosis. Surgery is usually very successful in restoring appearance and function.
If a drooping eyelid is left uncorrected in a child, it can lead to lazy eye.
Calling your health care provider
Drooping eyelids in children require prompt evaluation by an ophthalmologist.
New or rapidly changing ptosis in adults requires prompt evaluation by an ophthalmologist.
Custer PL. Blepharoptosis. In: Yanoff M, Duker JS, eds. Ophthalmology. 3rd ed. St. Louis, Mo: Mosby Elsevier; 2008:chap 12.5.
Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.